Koh Samui

Koh Samui Weather in August

Average temperatures, rainfall, sunshine and the best places to visit in Koh Samui, Thailand in August.

Considering a trip to Koh Samui, Thailand this August and wondering about the expected weather conditions? Find all the crucial information you need right here, addressing your question:

What to Expect in Koh Samui in August

Koh Samui, Thailand is a region in Thailand. August in Koh Samui generally has very warm temperatures, with precipitation levels ranging from moderate to high.

Temperatures

The average maximum temperatures are very warm and range from 30°C (86°F) in Bophut to 33°C (91°F) in Suratthani. Nighttime temperatures generally drop to 25°C (77°F) in Suratthani and 27°C (81°F) in Bophut . These night and day temperatures are average and some days may be even warmer. So be prepared and dress for the heat.

For a closer look at conditions across Koh Samui, Thailand, refer to the map below.

Precipitation

In August, precipitation varies across different areas. From moderate rainfall in Laem Set Beach with an average of 94 mm (3.7 in) to high rainfall in Suratthani with 154 mm (6.1 in).

Average sunshine

Most areas see decent amounts of sunshine this month. Chaweng Beach gets around 152 hours of sunlight, providing a pleasant balance of sun and clouds. If you'd prefer more guaranteed sunshine, our weather planner can show you sunnier spots around the world.

Explore Koh Samui by month

Pick a month to see the average temperature, rainfall and sunshine in Koh Samui — and find the best time to visit. (based on Chaweng Beach)

Best Places to Visit in Koh Samui in August

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Koh Samui.

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Koh Samui

What is the weather like in August for some of the most popular destinations in Koh Samui, Thailand?

Temperature range in Koh Samui (August)

Precipitation variation in Koh Samui (August)

Chaweng Beach

In August Chaweng Beach generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 27°C (81°F) and high monthly rainfall. So on average the conditions are tolerable that month.

July
August
September
Max temperature
30°C (86°F)
30°C (86°F)
30°C (86°F)
Min temperature
27°C (81°F)
27°C (81°F)
27°C (81°F)
Monthly sun hours
156 hours
152 hours
145 hours
Monthly rainfall
98 mm (3.9 in)
107 mm (4.2 in)
162 mm (6.4 in)
Monthly rainy days
17 days
17 days
18 days
Weather conditions

Lamai Beach

In August Lamai Beach generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 27°C (81°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

July
August
September
Max temperature
30°C (86°F)
30°C (86°F)
30°C (86°F)
Min temperature
27°C (81°F)
27°C (81°F)
27°C (81°F)
Monthly sun hours
156 hours
152 hours
145 hours
Monthly rainfall
92 mm (3.6 in)
99 mm (3.9 in)
152 mm (6 in)
Monthly rainy days
17 days
17 days
18 days
Weather conditions

Bophut

In August Bophut generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 27°C (81°F) and high monthly rainfall. So on average the conditions are tolerable that month.

July
August
September
Max temperature
30°C (86°F)
30°C (86°F)
30°C (86°F)
Min temperature
27°C (81°F)
27°C (81°F)
27°C (81°F)
Monthly sun hours
156 hours
152 hours
145 hours
Monthly rainfall
102 mm (4 in)
111 mm (4.4 in)
166 mm (6.5 in)
Monthly rainy days
17 days
17 days
18 days
Weather conditions

Choeng Mon Beach

In August Choeng Mon Beach generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 27°C (81°F) and high monthly rainfall. So on average the conditions are tolerable that month.

July
August
September
Max temperature
30°C (86°F)
30°C (86°F)
30°C (86°F)
Min temperature
27°C (81°F)
27°C (81°F)
27°C (81°F)
Monthly sun hours
156 hours
152 hours
145 hours
Monthly rainfall
105 mm (4.1 in)
113 mm (4.4 in)
170 mm (6.7 in)
Monthly rainy days
17 days
17 days
18 days
Weather conditions

Mae Nam Beach

In August Mae Nam Beach generally has very high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 27°C (81°F) and high monthly rainfall. So on average the conditions are tolerable that month.

July
August
September
Max temperature
30°C (86°F)
30°C (86°F)
30°C (86°F)
Min temperature
27°C (81°F)
27°C (81°F)
27°C (81°F)
Monthly sun hours
156 hours
152 hours
145 hours
Monthly rainfall
102 mm (4 in)
111 mm (4.4 in)
166 mm (6.5 in)
Monthly rainy days
17 days
17 days
18 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Koh Samui, in Thailand.

Popular cities in August

Day & night temperatures, rainfall and average weather in Koh Samui in August.

City Weather Day temp Night temp Rainfall
Chaweng Beach 30°C (86°F) 27°C (81°F) 107 mm (4.2 in)
Lamai Beach 30°C (86°F) 27°C (81°F) 99 mm (3.9 in)
Bophut 30°C (86°F) 27°C (81°F) 111 mm (4.4 in)
Choeng Mon Beach 30°C (86°F) 27°C (81°F) 113 mm (4.4 in)
Mae Nam Beach 30°C (86°F) 27°C (81°F) 111 mm (4.4 in)
Bangrak Beach 30°C (86°F) 27°C (81°F) 110 mm (4.3 in)

Koh Samui weather in August: frequently asked questions

What is the weather like in Koh Samui, Thailand in August?

August in Koh Samui, Thailand brings unpleasant weather. In Chaweng Beach, daytime temperatures are typically around 30°C (86°F) and nighttime lows hover near 27°C (81°F).

What is the average temperature in Koh Samui, Thailand in August?

Average temperatures in Koh Samui, Thailand during August range from a nighttime low near 27°C (81°F) to a daytime high around 30°C (86°F) in Chaweng Beach.

Does Koh Samui, Thailand get a lot of rain in August?

Koh Samui, Thailand sees substantial rainfall in August. Chaweng Beach typically averages about 107 mm (4.2 in), a mix of wet and dry days, but bring an umbrella.

Is August a Good Time to Visit Koh Samui, Thailand?

Given the typically tolerable weather conditions in Chaweng Beach, August might be a good time to visit Koh Samui, Thailand.

On average, the best time to visit Koh Samui, Thailand is in January and February with generally perfect weather in Chaweng Beach. In contrast, October and November tend to have poor weather conditions.

Interested in more climate information?

We have much more information about the climate in Koh Samui.

Weather and climate has detailed information for every country in the world. Are you going to Thailand? Get detailed historical weather averages for many cities in Thailand.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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